<template>
  <div class="app-container">
    <!--查询表单-->
    <el-card class="operate-container" shadow="never">
      <el-form :inline="true" class="demo-form-inline">
        <el-form-item label="名称">
          <el-input v-model="searchObj.name" placeholder="讲师名" />
        </el-form-item>

        <el-form-item label="头衔">
          <el-select v-model="searchObj.level" clearable placeholder="头衔">
            <el-option value="1" label="高级讲师"/>
            <el-option value="0" label="首席讲师"/>
          </el-select>
        </el-form-item>

        <el-form-item label="入驻时间">
          <el-date-picker
            v-model="searchObj.joinDateBegin"
            placeholder="开始时间"
            value-format="yyyy-MM-dd" />
        </el-form-item>
        <el-form-item label="-">
          <el-date-picker
            v-model="searchObj.joinDateEnd"
            placeholder="结束时间"
            value-format="yyyy-MM-dd" />
        </el-form-item>

        <el-button type="primary" icon="el-icon-search" @click="listData()">查询</el-button>
        <el-button type="default" @click="resetData()">清空</el-button>
      </el-form>
    </el-card>

    <!-- 工具按钮 -->
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets" style="margin-top: 5px"></i>
      <span style="margin-top: 5px">数据列表</span>
      <el-button class="btn-add" @click="add()" type="danger" plain  style="margin-left: 1rem;">添加</el-button>
      <el-button class="btn-add" @click="batchRemove()" >批量删除</el-button>
    </el-card>

    <!-- 表格 -->
    <el-table
      :data="list"
      border
      stripe
      @selection-change="handleSelectionChange">
      <el-table-column type="selection"/>
      <el-table-column
        label="#"
        width="50">
        <template v-slot="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>
      <el-table-column prop="name" label="名称" width="80" />
      <el-table-column label="头衔" width="90">
        <template v-slot="scope">
          <el-tag v-if="scope.row.level === 1" type="success" size="mini">高级讲师</el-tag>
          <el-tag v-if="scope.row.level === 0" size="mini">首席讲师</el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="intro" label="简介" />
      <el-table-column prop="sort" label="排序" width="60" />
      <el-table-column prop="joinDate" label="入驻时间" width="160" />
      <el-table-column label="操作" width="200" align="center">
        <template v-slot="scope">
          <el-button type="text" size="mini" @click="removeById(scope.row.id)">删除</el-button>
          <span style="margin: 0 5px;color:#ccc">|</span>
          <router-link :to="'/vid/teacher/edit/'+scope.row.id">
            <el-button type="text" size="mini">修改</el-button>
          </router-link>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页组件 -->
    <el-pagination
      :current-page="page"
      :total="total"
      :page-size="limit"
      :page-sizes="[5, 10, 20, 30, 40, 50, 100]"
      style="padding: 30px 0; text-align: center;"
      layout="total, sizes, prev, pager, next, jumper"
      @size-change="changePageSize"
      @current-change="changeCurrentPage"
    />
  </div>

</template>

<script>

import teacherApi from "@/api/vid/teacher";

export default {
  name: "list",
  data(){
    return {
      list: [],
      total: 0,
      page: 1,
      limit: 10,
      searchObj: {},
      multipleSelection: []
    }
  },
  created() {
    this.listData()
  },
  methods:{
    listData(){
      teacherApi.pageList(this.page, this.limit, this.searchObj)
        .then(res => {
          this.list = res.data.list
          this.total = parseInt(res.data.total)
        })
    },
    handleSelectionChange(selection){
        this.multipleSelection = selection
    },
    changePageSize(size){
      this.limit = size
      this.listData()
    },
    changeCurrentPage(curPage){
      this.page = curPage
      this.listData()
    },
    removeById(id){
      this.$confirm('此操作将删除该讲师信息, 是否继续?','提示',{
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type:'warning'
      }).then(() => {
          teacherApi.removeTeacherId(id)
            .then(res => {
                this.$message.success('删除成功')
                this.listData()
            })
      })
    },
    add(){
      this.$router.push({path:'/vid/teacher/add'})
    },
    batchRemove(){
       if (this.multipleSelection.length === 0){
         this.$message.warning('请选择需要删除记录！')
         return
       }
       this.$confirm('此操作会删除讲师信息，是否继续？','提示',{
         confirmButtonText:'确定',
         cancelButtonText: '取消',
         type:'warning'
       }).then(() => {
         let ids = []
         this.multipleSelection.forEach(x => ids.push(x.id))
         teacherApi.batchRemove(ids).then(res => {
            this.$message.success('删除成功！')
            this.listData()
         })
       })
    },
    resetData(){
      this.searchObj = {}
      this.listData()
    }
  }
}
</script>
<style scoped lang="scss">

</style>
